<!-- 返回顶部 CSS 文件 -->
<style>
    #backTop {
        display: none;
        cursor: pointer;
        position: fixed;
        text-decoration: none;
        right: 20px;
        bottom: 70px;
        width: 37px;
        height: 38px;
        background: url('__STATIC__/images/result-huge-bg_2c8c18f.png') no-repeat 1px 0;
        _background-image: url('__STATIC__/images/result-huge-bg_2c8c18f.png');
        z-index: 9999;
    }
</style>
<!-- 返回顶部 JavaScript 文件 -->
<script>
    function goTop() {
        $("html,body").animate({scrollTop: 0},600,function(){});
    }
    function showGoTop()
    {
        var _html = '<a id="backTop" href="javascript:goTop();"></a>';
        if(!$('#backTop').length) $("body").append(_html);
        $("#backTop").fadeIn(500);
    }
    $(window).scroll(function () {
        var scrollt = document.documentElement.scrollTop + document.body.scrollTop;
        if ( scrollt > 600 ){
            showGoTop();
        } else {
            $("#backTop").fadeOut(500);
        }
    });
</script>